Refresh Optive Advanced (30 PF vials)

About Refresh Optive Advanced Active ingredients: Carboxymethylcellulose, glycerin, polysorbate 80 Preservative-ree Box of 30 0.01 fl oz/ 0.4mL vials Description (by Rebecca) See Refresh Optive for an idea of context. Refresh Optive Advanced has the following changes, among others, from just plain Optive: Slightly more glycerin (1% instead of 0.9%) Addition of polysorbate 80 (0.5%) Addition of castor oil (see inactive ingredients list) Addition of carbomer (a polymer, also listed in inactives) Description (from the manufacturer's literature) This scientifically advanced lubricant eye drop provides Dry Eye symptom relief through an innovative, triple-action, preservative-free formula. It’s clinically proven to relieve your dry, burning, irritated eyes due to Dry Eye. REFRESH OPTIVE® Advanced Preservative-Free works on all three layers of your tear film to: Lubricate for moisturizing Dry Eye relief Hydrate the eye surface cells Protect your natural tears by helping reduce tea